Suggested by Rookie
Somehow a team from DnD and Warhammer 40K finds themself on Szass Tam‘s artificial world and finds that a strange army just entered this world and plans to attack them. If even a single “hero unit” of defenders can survive for three days they will win.
DnD and Warhammer team: Sanguinius, Magnus (post Heresy, named daemons from team 1 do not lose their powers despite the fact that they will be in real world for a long time in this match), Ahriman, Dombreed, Cherubael (fully free and in his prime), Szass Tam, Dyrr, avatar of Vhaeraun and Transcendent One (PT). They also have all armies of the artifitial world at their command. Goal of team 1 is to ensure that at least one of them will survive, not to kill all enemies.
Attackers: Thrall, Jaina Proudmoore, Alexstrasza, Mannoroth, Korialstrasz, Malygos (Warcraft), Ganondorf (Legend of Zelda), Zeratul (Starcraft), Diablo, Imperius (Diablo), Vandus and his personal StormHost, Copsys Bule and his Rotbringers (Age of Sigmar), Last Dragonborn (TES), Dark Samus (Metroid), Luke (Star Wars, in his prime, EU allowed), Gilgamesh (F/SN, anime feats only and only servant spirit Gil).
Who will win?